Re: Bug#700530: qt frames empty

[Steven Chamberlain <steven@pyro.eu.org>]

Hi Julien,

On 21/02/13 15:16, Julien Cristau wrote:
> On Thu, Feb 21, 2013 at 00:45:04 +0000, Steven Chamberlain wrote:
>> That's odd... I don't notice any such glitch with at least kcalc, kate,
>> qsynth - with xorg-server/2:1.12.4-4 and qt4-x11/4:4.8.2+dfsg-11 on
>> kfreebsd-amd64 (9.0, wheezy/sid not fully up-to-date).  I'm using the
>> Xtightvnc server if that's relevant.
>>
> Does Xtightvnc expose MIT-SHM?  xdpyinfo would tell you.

The list of extensions seems quite short, but yes MIT-SHM is mentioned
(full output attached).

I'll see about trying to start X 'conventionally' on that machine
sometime, to compare.  Can't do that until after a reboot though (it's
in securelevel=1 so X/vesa can't use /dev/io currently).


>> On 20/02/13 22:18, Sune Vuorela wrote:
>>> The fix is surprisingly in xorg-server and can be found here:
>>> http://people.debian.org/~jcristau/kbsd-peercred.diff

> On Linux, the SO_PEERCRED socket option gives that information.  On
> FreeBSD, there's a getpeereid() libc call.

GNU/Hurd has neither of these, so maybe this patch has some benefit
there too?  (Cc'ing debian-hurd@ because someone with such a system may
want to test this patch on it.)

NetBSD doesn't support these methods either, so maybe it is affected
somehow.

Thanks again for your work,
Regards,
-- 
Steven Chamberlain
steven@pyro.eu.org

$ xdpyinfo
name of display:    :1.0
version number:    11.0
vendor string:    AT&T Laboratories Cambridge
vendor release number:    3332
maximum request size:  4194300 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    2
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x2800009, revert to Parent
number of extensions:    7
    BIG-REQUESTS
    MIT-SHM
    MIT-SUNDRY-NONSTANDARD
    SHAPE
    SYNC
    XC-MISC
    XTEST
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1024x768 pixels (347x260 millimeters)
  resolution:    75x75 dots per inch
  depths (1):    24
  root window id:    0x25
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x21
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store YES, save-unders YES
  largest cursor:    1024x768
  current input event mask:    0x7a802f
    KeyPressMask             KeyReleaseMask           ButtonPressMask          
    ButtonReleaseMask        LeaveWindowMask          ExposureMask             
    StructureNotifyMask      SubstructureNotifyMask   SubstructureRedirectMask 
    FocusChangeMask          PropertyChangeMask       
  number of visuals:    1
  default visual id:  0x22
  visual:
    visual id:    0x22
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits